US20020160075A1 - Nozzle for injection moulding of plastic materials - Google Patents

Nozzle for injection moulding of plastic materials Download PDF

Info

Publication number
US20020160075A1
US20020160075A1 US09/987,749 US98774901A US2002160075A1 US 20020160075 A1 US20020160075 A1 US 20020160075A1 US 98774901 A US98774901 A US 98774901A US 2002160075 A1 US2002160075 A1 US 2002160075A1
Authority
US
United States
Prior art keywords
heating resistor
nozzle
injection moulding
spiral
shaped groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
US09/987,749
Other versions
US7131831B2 (en
Inventor
Maurizio Bazzo
Tiziano Boscariol
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A S Attrezzature Speciali Srl
Inglass SpA
Original Assignee
A S ATTREZZATURE SPECIAL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by A S ATTREZZATURE SPECIAL filed Critical A S ATTREZZATURE SPECIAL
Assigned to A.S. ATTREZZATURE SPECIAL reassignment A.S. ATTREZZATURE SPECIAL ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BAZZO, MAURIZIO, BOSCARIOL, TIZIANO
Assigned to A.S. ATTREZZATURE SPECIALI SRL reassignment A.S. ATTREZZATURE SPECIALI SRL CORRECTIVE ASSIGNMENT TO CORRECT ASSIGNEE'S NAME PREVIOUSLY AT REEL 012310 FRAME 0123 Assignors: BAZZO, MAURIZIO
Publication of US20020160075A1 publication Critical patent/US20020160075A1/en
Assigned to QUASAR S.R.L. reassignment QUASAR S.R.L. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: A.S. ATTREZZATURE SPECIALI S.R.L.
Assigned to QUASER S.R.L. reassignment QUASER S.R.L. CORRECTIVE ASSIGNMENT TO CORRECT ASSIGNEE'S NAME RECORDED AT REEL/FRAME 014037/0370. Assignors: A.S. ATTREZZATURE SPECIALI S.R.L.
Assigned to AMULETO-TRADING E MARKETING LDA reassignment AMULETO-TRADING E MARKETING LDA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: QUASER S.R.L.
Priority to US11/463,374 priority Critical patent/US7210921B2/en
Publication of US7131831B2 publication Critical patent/US7131831B2/en
Application granted granted Critical
Assigned to INGLASS S.R.L. reassignment INGLASS S.R.L. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TRADINVEST CONSULTANTS LTD.
Assigned to TRADINVEST CONSULTANTS LTD. reassignment TRADINVEST CONSULTANTS LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMULETO TRADING E MARKETING LDA
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2737—Heating or cooling means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2737—Heating or cooling means therefor
    • B29C2045/274—Thermocouples or heat sensors
    • B29C2045/2741—Plurality of independent thermocouples or heat sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2737—Heating or cooling means therefor
    • B29C2045/2754—Plurality of independent heating or cooling means, e.g. independently controlling the heating of several zones of the nozzle

Definitions

  • This invention relates in general to injection moulding for plastic materials and, more specifically, to a nozzle for said injection moulding, of the type comprising a generally cylindrical body with a heating resistor wound on the external surface which is operatively connected to a controlling thermocouple.
  • thermocouple is connected to an automatic moulding process electronic control unit, which controls the electrical power to the heating resistor.
  • the object of this invention is to overcome said problem. According to this invention, this object is attained by a nozzle which is provided with a second heating resistor, wound on the external surface, independent from said first heating resistor, and provided with an autonomous control thermocouple.
  • thermocouples of the two heating resistors are connected to the moulding process electronic control unit so as to selectively activate either one or the other of the two resistors according to their effective functionality.
  • the two thermocouples can also be calibrated to differentiated values.
  • FIG. 1 schematically illustrates a simplified form of an axial cross-section of the nozzle for plastic material injection moulding according to a first embodiment of the invention
  • FIG. 2 shows a variant of FIG. 1.
  • numeral 1 generally refers to a nozzle for plastic material injection moulding according to this invention. It must be stressed that, for the sake of simplicity of the illustration, the drawing only shows the external body of the nozzle, while the valve consisting of a mobile pin axially reciprocating and co-operating with a corresponding annular valve seat is omitted.
  • the body of the nozzle 1 is generically cylindrical with an internal axial passage 3 .
  • a spiral-shaped groove 4 is made in the external side of the body 2 , in which a first heating resistor 5 and, according to this invention, a second heating resistor 6 are wound.
  • the resistors 5 and 6 are entirely independent from each other on a functional point of view.
  • the resistors 5 and 6 are arranged in a radially superimposed condition in the spiral-shaped groove 4 , which has a depth correspondigly adapted to house both therein.
  • the two resistors 5 , 6 are electrically connected independently one with respect to the other to a source of electrical power, via respective connection terminals which are not visible in the drawing and which are operatively connected (in a way which is known and however within the grasp of sector technicians) each with a respective thermocouple 7 , 8 .
  • thermocouples 7 , 8 arranged in correspondence with the end of the body 2 destined to face inside the injection mould, are in turn independently connected to a moulding process electronic control unit (conventional and not shown in the drawings), which controls the electrical power to either one or the other resistor 5 , 6 according to the predefined moulding process parameters.
  • the electronic control unit also selects either one of the two resistors 5 , 6 according to their effective functionality. In this way, for example, the first heating resistor 5 will be normally operative, while the second resistor 6 will be kept as a backup, to be made operative in the case of a failure concerning the first resistor 5 or the respective thermocouple 7 .
  • FIG. 2 A differentiated operation of the two resistors 5 , 6 , which are also automatically managed by part of the electronic control unit will be possible, if required by operating on the calibration of the respective thermocouples 7 , 8 .
  • the variant shown in FIG. 2 is generally similar to the embodiment disclosed with reference to FIG. 1, and only the difference shall be disclosed in detail.
  • the resistors 5 and 6 are arranged in an axially side-by-side condition in the spiral-shaped groove 4 , which in this case has a width correspondigly adapted to house both therein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Nozzle (1) for injection moulding of plastic materials, comprising a generally cylindrical body (2) with spiral-shaped groove (4) on the external surface, in which a first and a second heating resistor (5, 6), which are independent from each other and which are equipped with respective autonomous controlling thermocouples (7, 8), are wound.

Description

    FIELD OF THE INVENTION
  • This invention relates in general to injection moulding for plastic materials and, more specifically, to a nozzle for said injection moulding, of the type comprising a generally cylindrical body with a heating resistor wound on the external surface which is operatively connected to a controlling thermocouple. [0001]
  • In nozzles of this kind, the function of the heating resistor is evidently to keep the temperature of the nozzle at predefined values according to the composition of the melt plastic material to be injected. The thermocouple is connected to an automatic moulding process electronic control unit, which controls the electrical power to the heating resistor. [0002]
  • In such nozzles currently in use, an example of which is described and illustrated in European Patent EP-B-0750975 by MOLD MASTERS LIMITED, the efficiency of the moulding process automatic control is closely connected to the functionality, i.e. reliability, of the heating resistor and the respective thermocouple. This is because, in the event of failures to either one of the two components, the temperature of the injected plastic material can no longer be controlled in a suitable fashion, with consequent degrading of the moulding process. On the other hand, replacing the heating resistor or the associated thermocouple would mean stopping the moulding apparatus and be a critical problem, considering the high number of nozzles commonly used in one moulding apparatus. [0003]
    • SUMMARY OF THE INVENTION
  • The object of this invention is to overcome said problem. According to this invention, this object is attained by a nozzle which is provided with a second heating resistor, wound on the external surface, independent from said first heating resistor, and provided with an autonomous control thermocouple. [0004]
  • Thanks to this idea, the nozzle, and consequently the moulding apparatus where the nozzle is fitted, ensures confidence of operation which is double with respect to that of a traditional nozzle. The thermocouples of the two heating resistors are connected to the moulding process electronic control unit so as to selectively activate either one or the other of the two resistors according to their effective functionality. The two thermocouples can also be calibrated to differentiated values.[0005]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The invention will be better explained by the following detailed description with reference to the accompanying drawings purely provided as non-limiting example, in which: [0006]
  • FIG. 1 schematically illustrates a simplified form of an axial cross-section of the nozzle for plastic material injection moulding according to a first embodiment of the invention, and [0007]
  • FIG. 2 shows a variant of FIG. 1.[0008]
    • DETAILED DESCRIPTION OF THE INVENTION
  • With reference to FIG. 1, numeral [0009] 1 generally refers to a nozzle for plastic material injection moulding according to this invention. It must be stressed that, for the sake of simplicity of the illustration, the drawing only shows the external body of the nozzle, while the valve consisting of a mobile pin axially reciprocating and co-operating with a corresponding annular valve seat is omitted.
  • The body of the nozzle [0010] 1, generally indicated by numeral 2, is generically cylindrical with an internal axial passage 3. A spiral-shaped groove 4 is made in the external side of the body 2, in which a first heating resistor 5 and, according to this invention, a second heating resistor 6 are wound.
  • The [0011] resistors 5 and 6 are entirely independent from each other on a functional point of view.
  • In the shown embodiment the [0012] resistors 5 and 6 are arranged in a radially superimposed condition in the spiral-shaped groove 4, which has a depth correspondigly adapted to house both therein.
  • The two [0013] resistors 5, 6 are electrically connected independently one with respect to the other to a source of electrical power, via respective connection terminals which are not visible in the drawing and which are operatively connected (in a way which is known and however within the grasp of sector technicians) each with a respective thermocouple 7, 8.
  • The two [0014] thermocouples 7, 8, arranged in correspondence with the end of the body 2 destined to face inside the injection mould, are in turn independently connected to a moulding process electronic control unit (conventional and not shown in the drawings), which controls the electrical power to either one or the other resistor 5, 6 according to the predefined moulding process parameters. The electronic control unit also selects either one of the two resistors 5, 6 according to their effective functionality. In this way, for example, the first heating resistor 5 will be normally operative, while the second resistor 6 will be kept as a backup, to be made operative in the case of a failure concerning the first resistor 5 or the respective thermocouple 7.
  • A differentiated operation of the two [0015] resistors 5, 6, which are also automatically managed by part of the electronic control unit will be possible, if required by operating on the calibration of the respective thermocouples 7, 8. The variant shown in FIG. 2 is generally similar to the embodiment disclosed with reference to FIG. 1, and only the difference shall be disclosed in detail. In this variant the resistors 5 and 6 are arranged in an axially side-by-side condition in the spiral-shaped groove 4, which in this case has a width correspondigly adapted to house both therein.
  • Naturally, numerous changes can be implemented to the construction and forms of embodiment of the invention herein envisaged, all comprised within the context of the concept characterising this invention, as defined by the following claims. [0016]

Claims (3)

What is claimed is:
1. Nozzle (1) for injection moulding of plastic materials comprising a generally cylindrical body (2) having an external surface and a heating resistor (5) wound on said external surface and to which a controlling thermocouple (7) is operatively connected, and also comprising a second heating resistor (6) wound on said external surface of the body (2), independent from said heating resistor (5) and equipped with an autonomous second controlling thermocouple (8).
2. Nozzle according to claim 1, in which said heating resistor (5) is housed in a spiral-shaped groove (4) of said cylindrical body (2), wherein said second heating resistor (6) is also housed in said spiral-shaped groove (4) in a superimposed condition with said heating resistor (5).
3. Nozzle according to claim 1, in which said heating resistor (5) is housed in a spiral-shaped groove (4) of said cylindrical body (2), wherein said second heating resistor (6) is also housed in said spiral-shaped groove (4) in a side-by-side condition with said heating resistor (5).
US09/987,749 2001-04-27 2001-11-15 Nozzle for injection moulding of plastic materials Expired - Lifetime US7131831B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/463,374 US7210921B2 (en) 2001-04-27 2006-08-09 Nozzle for injection moulding of plastic materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITT02001A000399 2001-04-27
IT2001TO000399A ITTO20010399A1 (en) 2001-04-27 2001-04-27 NOZZLE FOR INJECTION MOLDS OF PLASTIC MATERIALS.

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/463,374 Continuation US7210921B2 (en) 2001-04-27 2006-08-09 Nozzle for injection moulding of plastic materials

Publications (2)

Publication Number Publication Date
US20020160075A1 true US20020160075A1 (en) 2002-10-31
US7131831B2 US7131831B2 (en) 2006-11-07

Family

ID=11458814

Family Applications (2)

Application Number Title Priority Date Filing Date
US09/987,749 Expired - Lifetime US7131831B2 (en) 2001-04-27 2001-11-15 Nozzle for injection moulding of plastic materials
US11/463,374 Expired - Lifetime US7210921B2 (en) 2001-04-27 2006-08-09 Nozzle for injection moulding of plastic materials

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/463,374 Expired - Lifetime US7210921B2 (en) 2001-04-27 2006-08-09 Nozzle for injection moulding of plastic materials

Country Status (6)

Country Link
US (2) US7131831B2 (en)
EP (2) EP1484157B1 (en)
AT (1) ATE278528T1 (en)
CA (1) CA2361868C (en)
DE (2) DE60106203T2 (en)
IT (1) ITTO20010399A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6561789B2 (en) 2000-03-08 2003-05-13 Mold-Masters Limited Compact cartridge hot runner nozzle
US20040137101A1 (en) * 2003-01-10 2004-07-15 Intercos Italia S.P.A. Machine for the manufacture of lipsticks or similar
US20060018990A1 (en) * 2004-07-07 2006-01-26 Incos S.P.A. Injector for equipment for injection moulding of plastic materials
US20060081590A1 (en) * 2004-10-15 2006-04-20 Incos S.P.A. Injector for equipment for injection moulding of plastic materials
DE102005018062B4 (en) * 2004-04-23 2009-11-19 Inglass S.P.A., San Polo Di Piave Process for the production of heating devices for components for injection molding equipment
CN102343649A (en) * 2011-10-10 2012-02-08 柳道万和(苏州)热流道系统有限公司 Lifting and receiving multi-cavity hot runner system
US20130216644A1 (en) * 2012-02-22 2013-08-22 Siegrid Sommer Hot runner nozzle having an electrical heating element

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20010399A1 (en) 2001-04-27 2002-10-27 Attrezzature Speciali Srl As NOZZLE FOR INJECTION MOLDS OF PLASTIC MATERIALS.
US7510392B2 (en) * 2002-11-06 2009-03-31 Mold-Masters (2007) Limited Injection nozzle with a removable heater device having one or more heating elements
US20050181090A1 (en) * 2002-12-06 2005-08-18 Mold-Masters Limited Injection molding nozzle with embedded and removable heaters
US20040258792A1 (en) * 2003-06-23 2004-12-23 Mold-Masters Limited Injection molding manifold having a heating system with two portions
DE102005007398B3 (en) * 2005-02-18 2006-09-21 Incoe International, Inc. Heating cylinder for pushing onto a spray nozzle for an injection molding plant
ITTO20050158A1 (en) * 2005-03-11 2006-09-12 Incos Spa ENERGY CONTROL SYSTEM FOR PLASTIC INJECTION MOLDING EQUIPMENT
ITTO20050841A1 (en) * 2005-11-29 2007-05-30 Incos Spa THERMOREGULATION SYSTEM FOR HEATED COMPONENTS OF PLASTIC INJECTION MOLDING EQUIPMENT
ITTV20060108A1 (en) * 2006-06-16 2007-12-17 Inglass Spa SYSTEM AND METHOD TO DISCRIMINATE AN ANOMALY CONDITION OF OPERATION IN A HOT CHANNEL DEVICE FOR PLASTIC INJECTION MOLDING EQUIPMENT
ITTO20070032U1 (en) * 2007-03-02 2008-09-03 Inglass Spa ELECTRONIC EQUIPMENT FOR THE MANAGEMENT OF MOLDS FOR INJECTION MOLDING OF PLASTIC MATERIALS
ITTO20090984A1 (en) * 2009-12-14 2011-06-15 Inglass Spa INJECTOR FOR PLASTIC INJECTION MOLDING EQUIPMENT

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812323A (en) * 1972-11-03 1974-05-21 Ford Motor Co Electrical heating bands for a feeding system
US5052100A (en) * 1990-04-10 1991-10-01 Panos Trakas Method of making sprue bushing assembly with inner thermal sleeve
US6561789B2 (en) * 2000-03-08 2003-05-13 Mold-Masters Limited Compact cartridge hot runner nozzle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8620956U1 (en) * 1986-08-05 1986-11-27 Jetform Heißkanalnormalien und Zubehör GmbH, 7255 Rutesheim Device for electrical heating of hot runner nozzles
JP2991789B2 (en) * 1991-02-19 1999-12-20 モールド・マスターズ株式会社 Heating nozzle for plastic molding
DE29510135U1 (en) * 1995-06-22 1995-08-31 Hotset Heizpatronen U Zubehoer Device for heating distribution pipes for supplying fluids
CA2153079A1 (en) * 1995-06-30 1996-12-31 Klaus Bauer Valve member locating insert for injection molding nozzle
NL1012925C2 (en) * 1999-08-27 2001-02-28 Franciscus Antonius Jozef Van Injection molding device.
ITTO20010399A1 (en) 2001-04-27 2002-10-27 Attrezzature Speciali Srl As NOZZLE FOR INJECTION MOLDS OF PLASTIC MATERIALS.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812323A (en) * 1972-11-03 1974-05-21 Ford Motor Co Electrical heating bands for a feeding system
US5052100A (en) * 1990-04-10 1991-10-01 Panos Trakas Method of making sprue bushing assembly with inner thermal sleeve
US6561789B2 (en) * 2000-03-08 2003-05-13 Mold-Masters Limited Compact cartridge hot runner nozzle

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7108502B2 (en) 2000-03-08 2006-09-19 Mold-Masters Limited Hot runner nozzle with interlaced heater and sensor
US20030228390A1 (en) * 2000-03-08 2003-12-11 Mold-Masters Limited Compact cartridge hot runner nozzle and method of making
US20040037913A1 (en) * 2000-03-08 2004-02-26 Mold-Masters Limited Hot runner nozzle with interlaced heater and sensor
US6761557B2 (en) 2000-03-08 2004-07-13 Mold-Masters Limited Compact cartridge hot runner nozzle
US7377768B2 (en) 2000-03-08 2008-05-27 Mold-Masters (2007) Limited Hot runner nozzle with removable sleeve
US20060292256A1 (en) * 2000-03-08 2006-12-28 Gellert Jobst U Hot runner nozzle with removable sleeve
US6561789B2 (en) 2000-03-08 2003-05-13 Mold-Masters Limited Compact cartridge hot runner nozzle
US7128567B2 (en) * 2003-01-10 2006-10-31 Intercos S.P.A. Machine for the manufacture of lipsticks or similar
US20040137101A1 (en) * 2003-01-10 2004-07-15 Intercos Italia S.P.A. Machine for the manufacture of lipsticks or similar
DE102005018062B4 (en) * 2004-04-23 2009-11-19 Inglass S.P.A., San Polo Di Piave Process for the production of heating devices for components for injection molding equipment
US20060018990A1 (en) * 2004-07-07 2006-01-26 Incos S.P.A. Injector for equipment for injection moulding of plastic materials
US20060081590A1 (en) * 2004-10-15 2006-04-20 Incos S.P.A. Injector for equipment for injection moulding of plastic materials
US7288744B2 (en) * 2004-10-15 2007-10-30 Inglass S.P.A. Injector for equipment for injection moulding of plastic materials
CN102343649A (en) * 2011-10-10 2012-02-08 柳道万和(苏州)热流道系统有限公司 Lifting and receiving multi-cavity hot runner system
US20130216644A1 (en) * 2012-02-22 2013-08-22 Siegrid Sommer Hot runner nozzle having an electrical heating element
US8840395B2 (en) * 2012-02-22 2014-09-23 Günther Heisskanaltechnik Gmbh Hot runner nozzle having an electrical heating element

Also Published As

Publication number Publication date
EP1252998B1 (en) 2004-10-06
ITTO20010399A1 (en) 2002-10-27
ATE278528T1 (en) 2004-10-15
DE60106203T2 (en) 2005-11-17
EP1252998A3 (en) 2003-04-23
EP1484157B1 (en) 2007-10-17
DE60106203D1 (en) 2004-11-11
US7210921B2 (en) 2007-05-01
US20060275527A1 (en) 2006-12-07
CA2361868A1 (en) 2002-10-27
EP1484157A3 (en) 2005-03-23
DE60131031D1 (en) 2007-11-29
US7131831B2 (en) 2006-11-07
ITTO20010399A0 (en) 2001-04-27
CA2361868C (en) 2010-02-02
EP1484157A2 (en) 2004-12-08
EP1252998A2 (en) 2002-10-30
DE60131031T2 (en) 2008-07-17

Similar Documents

Publication Publication Date Title
US7210921B2 (en) Nozzle for injection moulding of plastic materials
EP1234651B1 (en) Molding system using film heaters
US5147663A (en) Modular manifold assembly
US6261084B1 (en) Elastically deformable nozzle for injection molding
KR960013062B1 (en) Injection nozzle of injection molding machine
US4707310A (en) Method for heat control of hot runner molds
US6104006A (en) Method and apparatus for the programmed temperature control of a heating barrel
CA2004683C (en) Multi-gate molding heater assembly
JP2005132087A (en) Injection molding nozzle equipped with embedded type heater and detachable heater
US6157777A (en) Heater assembly for a fluid conduit with an integral heater
US20080241299A1 (en) Electronic Device for Controlling Plastics Injection Molds
EP1428646B1 (en) Nozzle with a removable and replaceable heating device
KR20010031454A (en) Method of molding toothbrushes and apparatus for performing the method
US7288744B2 (en) Injector for equipment for injection moulding of plastic materials
JPH0518121Y2 (en)
JP3029559B2 (en) Injection nozzle temperature controller
JPS6337228Y2 (en)
JP3358079B2 (en) Injection nozzle device of injection molding machine
JPH0512020Y2 (en)
JP2509297Y2 (en) Nozzle heating device for injection molding machine
KR100196284B1 (en) Semiconductor molding apparatus having a temperature control function
JP2006175828A (en) Nozzle for injection molding and injection molding apparatus
JPH07238578A (en) Water pipe freeze-preventing device
JPH09323345A (en) Temperature control device for heating barrel
JPH06166077A (en) Heating device for injection molding machine

Legal Events

Date Code Title Description
AS Assignment

Owner name: A.S. ATTREZZATURE SPECIAL, ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BAZZO, MAURIZIO;BOSCARIOL, TIZIANO;REEL/FRAME:012310/0123

Effective date: 20011030

AS Assignment

Owner name: A.S. ATTREZZATURE SPECIALI SRL, ITALY

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT ASSIGNEE'S NAME PREVIOUSLY AT REEL 012310 FRAME 0123;ASSIGNOR:BAZZO, MAURIZIO;REEL/FRAME:012543/0627

Effective date: 20011030

AS Assignment

Owner name: QUASAR S.R.L., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:A.S. ATTREZZATURE SPECIALI S.R.L.;REEL/FRAME:014037/0370

Effective date: 20011116

AS Assignment

Owner name: QUASER S.R.L., ITALY

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT ASSIGNEE'S NAME RECORDED AT REEL/FRAME 0140;ASSIGNOR:A.S. ATTREZZATURE SPECIALI S.R.L.;REEL/FRAME:014767/0221

Effective date: 20011116

AS Assignment

Owner name: AMULETO-TRADING E MARKETING LDA, PORTUGAL

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:QUASER S.R.L.;REEL/FRAME:014897/0825

Effective date: 20021017

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STCF Information on status: patent grant

Free format text: PATENTED CASE

AS Assignment

Owner name: INGLASS S.R.L., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TRADINVEST CONSULTANTS LTD.;REEL/FRAME:020845/0123

Effective date: 20070928

Owner name: TRADINVEST CONSULTANTS LTD., UNITED KINGDOM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AMULETO TRADING E MARKETING LDA;REEL/FRAME:020845/0103

Effective date: 20070824

FEPP Fee payment procedure

Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

FEPP Fee payment procedure

Free format text: PAT HOLDER NO LONGER CLAIMS SMALL ENTITY STATUS, ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: STOL); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 8

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553)

Year of fee payment: 12